Adaring stunt woman sitting on a tree limb wishes to drop vertically onto a horse gallop ing under the tree. the constant speed of the horse is 12.8 m/s, and the woman is initially 2.23 m above the level of the saddle. how long is she in the air? the acceleration of gravity is 9.8 m/s2 answer in units of s what must be the horizontal distance between the saddle and limb when the woman makes her move? answer in units of m.

0.67 seconds

8.576 m

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.8 m/s²

Time taken by the stunt woman to drop to the saddle is 0.67 seconds which is the time she will stay in the air.

Speed of the horse = 12.8 m/s

Distance = Speed × Time

⇒Distance = 12.8×0.67

⇒Distance = 8.576 m

Hence, the distance between the horse and stunt woman should be 8.576 m when she jumps.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

it is a negative acceleration